I believe you are confusing this with staff punishment. Your character being PK’d is more or less an effect from your roleplay rather than staff punishment.
Per the PK guidelines if you initiate a violent confrontation with officers you are subject to PK if you die. These guidelines are set in place to make sure your roleplay actions carry weight. Otherwise you could just shoot officers everytime they attempt to arrest you, effectively avoiding all charges
While it is unfortunate you are unaware of this is something we don’t give second chances for, as it’s not staff punishment per se.
I strongly recommend you read the guidelines surrounding PKs to familiarize yourself so you do not have to go through this again, or at least understand what could come from your actions.